/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 02:16:47,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 02:16:47,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 02:16:47,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 02:16:47,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 02:16:47,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 02:16:47,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 02:16:47,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 02:16:47,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 02:16:47,214 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 02:16:47,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 02:16:47,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 02:16:47,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 02:16:47,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 02:16:47,215 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 02:16:47,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 02:16:47,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 02:16:47,216 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 02:16:47,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 02:16:47,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 02:16:47,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 02:16:47,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 02:16:47,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 02:16:47,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 02:16:47,223 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 02:16:47,223 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 02:16:47,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 02:16:47,224 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 02:16:47,225 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 02:16:47,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 02:16:47,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 02:16:47,226 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 02:16:47,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:16:47,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 02:16:47,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 02:16:47,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 02:16:47,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 02:16:47,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 02:16:47,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 02:16:47,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 02:16:47,227 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 02:16:47,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 02:16:47,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 02:16:47,227 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 02:16:47,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 02:16:47,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 02:16:47,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 02:16:47,452 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 02:16:47,455 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 02:16:47,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2023-12-21 02:16:48,565 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 02:16:48,736 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 02:16:48,736 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2023-12-21 02:16:48,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b4acefd6/6f38c4514f7b45488b4992a9faa9b8c3/FLAG71cc49c2c [2023-12-21 02:16:48,758 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b4acefd6/6f38c4514f7b45488b4992a9faa9b8c3 [2023-12-21 02:16:48,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 02:16:48,761 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 02:16:48,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 02:16:48,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 02:16:48,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 02:16:48,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:48" (1/1) ... [2023-12-21 02:16:48,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622b1472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:48, skipping insertion in model container [2023-12-21 02:16:48,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:48" (1/1) ... [2023-12-21 02:16:48,808 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 02:16:48,931 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i[916,929] [2023-12-21 02:16:48,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:16:48,991 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 02:16:48,999 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i[916,929] [2023-12-21 02:16:49,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:16:49,040 INFO L206 MainTranslator]: Completed translation [2023-12-21 02:16:49,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49 WrapperNode [2023-12-21 02:16:49,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 02:16:49,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 02:16:49,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 02:16:49,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 02:16:49,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,088 INFO L138 Inliner]: procedures = 29, calls = 244, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 811 [2023-12-21 02:16:49,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 02:16:49,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 02:16:49,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 02:16:49,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 02:16:49,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,136 INFO L175 MemorySlicer]: Split 199 memory accesses to 18 slices as follows [2, 3, 11, 8, 12, 13, 6, 14, 5, 22, 22, 14, 16, 8, 8, 3, 23, 9]. 12 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 19 writes are split as follows [0, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]. [2023-12-21 02:16:49,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 02:16:49,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 02:16:49,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 02:16:49,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 02:16:49,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (1/1) ... [2023-12-21 02:16:49,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:16:49,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:49,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 02:16:49,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 02:16:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 02:16:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 02:16:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 02:16:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-21 02:16:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-21 02:16:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-21 02:16:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-21 02:16:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-21 02:16:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-21 02:16:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-21 02:16:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-21 02:16:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-21 02:16:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-21 02:16:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-21 02:16:49,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-12-21 02:16:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-12-21 02:16:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-12-21 02:16:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2023-12-21 02:16:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2023-12-21 02:16:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-12-21 02:16:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-12-21 02:16:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-12-21 02:16:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-12-21 02:16:49,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-12-21 02:16:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2023-12-21 02:16:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2023-12-21 02:16:49,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2023-12-21 02:16:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2023-12-21 02:16:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2023-12-21 02:16:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2023-12-21 02:16:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2023-12-21 02:16:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2023-12-21 02:16:49,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#14 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#15 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#16 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#17 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2023-12-21 02:16:49,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2023-12-21 02:16:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2023-12-21 02:16:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2023-12-21 02:16:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2023-12-21 02:16:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2023-12-21 02:16:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2023-12-21 02:16:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2023-12-21 02:16:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#14 [2023-12-21 02:16:49,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#15 [2023-12-21 02:16:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#16 [2023-12-21 02:16:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#17 [2023-12-21 02:16:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 02:16:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 02:16:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-21 02:16:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-21 02:16:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-21 02:16:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2023-12-21 02:16:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2023-12-21 02:16:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2023-12-21 02:16:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2023-12-21 02:16:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2023-12-21 02:16:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2023-12-21 02:16:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2023-12-21 02:16:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2023-12-21 02:16:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2023-12-21 02:16:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2023-12-21 02:16:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2023-12-21 02:16:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2023-12-21 02:16:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2023-12-21 02:16:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2023-12-21 02:16:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#14 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#15 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#16 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#17 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 02:16:49,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-21 02:16:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-12-21 02:16:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 02:16:49,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 02:16:49,480 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 02:16:49,482 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 02:16:49,903 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 02:16:49,934 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 02:16:49,935 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 02:16:49,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:49 BoogieIcfgContainer [2023-12-21 02:16:49,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 02:16:49,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 02:16:49,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 02:16:49,939 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 02:16:49,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:16:48" (1/3) ... [2023-12-21 02:16:49,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e053b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:49, skipping insertion in model container [2023-12-21 02:16:49,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:49" (2/3) ... [2023-12-21 02:16:49,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e053b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:49, skipping insertion in model container [2023-12-21 02:16:49,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:49" (3/3) ... [2023-12-21 02:16:49,941 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-80.i [2023-12-21 02:16:49,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 02:16:49,952 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 02:16:49,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 02:16:50,000 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2566d11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 02:16:50,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 02:16:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:16:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 02:16:50,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:50,028 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:50,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:50,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:50,034 INFO L85 PathProgramCache]: Analyzing trace with hash 206751335, now seen corresponding path program 1 times [2023-12-21 02:16:50,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:50,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649144876] [2023-12-21 02:16:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:50,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:50,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649144876] [2023-12-21 02:16:50,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 02:16:50,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577719801] [2023-12-21 02:16:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:50,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:50,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:50,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:50,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 02:16:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:50,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 02:16:50,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-12-21 02:16:50,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:50,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577719801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:50,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:50,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 02:16:50,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235014099] [2023-12-21 02:16:50,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:50,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 02:16:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:50,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 02:16:50,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 02:16:50,752 INFO L87 Difference]: Start difference. First operand has 147 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 128 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:16:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:50,794 INFO L93 Difference]: Finished difference Result 291 states and 459 transitions. [2023-12-21 02:16:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 02:16:50,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2023-12-21 02:16:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:50,802 INFO L225 Difference]: With dead ends: 291 [2023-12-21 02:16:50,802 INFO L226 Difference]: Without dead ends: 145 [2023-12-21 02:16:50,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 02:16:50,809 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:50,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:16:50,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-21 02:16:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-21 02:16:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 126 states have internal predecessors, (183), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:16:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 217 transitions. [2023-12-21 02:16:50,851 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 217 transitions. Word has length 148 [2023-12-21 02:16:50,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:50,851 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 217 transitions. [2023-12-21 02:16:50,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:16:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 217 transitions. [2023-12-21 02:16:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 02:16:50,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:50,854 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:50,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 02:16:51,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 02:16:51,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:51,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash 953343569, now seen corresponding path program 1 times [2023-12-21 02:16:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:51,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897380506] [2023-12-21 02:16:51,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:51,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:51,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:51,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483248306] [2023-12-21 02:16:51,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:51,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:51,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:51,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 02:16:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:51,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 02:16:51,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-21 02:16:51,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:51,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897380506] [2023-12-21 02:16:51,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483248306] [2023-12-21 02:16:51,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483248306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:51,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:51,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:16:51,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587348329] [2023-12-21 02:16:51,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:51,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:16:51,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:51,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:16:51,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:16:51,485 INFO L87 Difference]: Start difference. First operand 145 states and 217 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:16:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:51,546 INFO L93 Difference]: Finished difference Result 295 states and 442 transitions. [2023-12-21 02:16:51,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:16:51,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2023-12-21 02:16:51,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:51,548 INFO L225 Difference]: With dead ends: 295 [2023-12-21 02:16:51,548 INFO L226 Difference]: Without dead ends: 151 [2023-12-21 02:16:51,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:16:51,549 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 10 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:51,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 632 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:16:51,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-21 02:16:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2023-12-21 02:16:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 128 states have (on average 1.4453125) internal successors, (185), 128 states have internal predecessors, (185), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:16:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 219 transitions. [2023-12-21 02:16:51,561 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 219 transitions. Word has length 148 [2023-12-21 02:16:51,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:51,561 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 219 transitions. [2023-12-21 02:16:51,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-21 02:16:51,562 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 219 transitions. [2023-12-21 02:16:51,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 02:16:51,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:51,564 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:51,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 02:16:51,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 02:16:51,771 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:51,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1797349071, now seen corresponding path program 1 times [2023-12-21 02:16:51,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:51,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943140752] [2023-12-21 02:16:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:51,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:51,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914411942] [2023-12-21 02:16:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:51,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:51,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:51,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:51,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 02:16:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:52,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 02:16:52,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:16:52,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:52,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:52,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943140752] [2023-12-21 02:16:52,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:52,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914411942] [2023-12-21 02:16:52,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914411942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:52,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:52,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:16:52,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624929883] [2023-12-21 02:16:52,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:52,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:16:52,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:52,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:16:52,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:16:52,101 INFO L87 Difference]: Start difference. First operand 147 states and 219 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:52,154 INFO L93 Difference]: Finished difference Result 305 states and 454 transitions. [2023-12-21 02:16:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:16:52,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 148 [2023-12-21 02:16:52,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:52,160 INFO L225 Difference]: With dead ends: 305 [2023-12-21 02:16:52,160 INFO L226 Difference]: Without dead ends: 159 [2023-12-21 02:16:52,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:16:52,162 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 21 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:52,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 630 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:16:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-21 02:16:52,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2023-12-21 02:16:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 130 states have (on average 1.4384615384615385) internal successors, (187), 130 states have internal predecessors, (187), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:16:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 221 transitions. [2023-12-21 02:16:52,180 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 221 transitions. Word has length 148 [2023-12-21 02:16:52,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:52,180 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 221 transitions. [2023-12-21 02:16:52,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 221 transitions. [2023-12-21 02:16:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 02:16:52,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:52,182 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:52,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 02:16:52,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:52,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:52,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash 988002445, now seen corresponding path program 1 times [2023-12-21 02:16:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:52,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374141177] [2023-12-21 02:16:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:52,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:52,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:52,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [154496865] [2023-12-21 02:16:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:52,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:52,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:52,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:52,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 02:16:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:52,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 02:16:52,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:16:52,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:52,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:52,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374141177] [2023-12-21 02:16:52,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:52,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154496865] [2023-12-21 02:16:52,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154496865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:52,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:52,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:16:52,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729670638] [2023-12-21 02:16:52,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:52,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:16:52,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:52,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:16:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:16:52,798 INFO L87 Difference]: Start difference. First operand 149 states and 221 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:52,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:52,829 INFO L93 Difference]: Finished difference Result 305 states and 452 transitions. [2023-12-21 02:16:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:16:52,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 148 [2023-12-21 02:16:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:52,833 INFO L225 Difference]: With dead ends: 305 [2023-12-21 02:16:52,833 INFO L226 Difference]: Without dead ends: 157 [2023-12-21 02:16:52,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:16:52,840 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 12 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:52,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 628 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:16:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-21 02:16:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2023-12-21 02:16:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 132 states have (on average 1.4318181818181819) internal successors, (189), 132 states have internal predecessors, (189), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:16:52,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 223 transitions. [2023-12-21 02:16:52,854 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 223 transitions. Word has length 148 [2023-12-21 02:16:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:52,855 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 223 transitions. [2023-12-21 02:16:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 223 transitions. [2023-12-21 02:16:52,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 02:16:52,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:52,857 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:52,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 02:16:53,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:53,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:53,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:53,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1045260747, now seen corresponding path program 1 times [2023-12-21 02:16:53,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:53,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835464903] [2023-12-21 02:16:53,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:53,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:53,127 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:53,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619824196] [2023-12-21 02:16:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:53,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:53,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:53,131 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:53,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 02:16:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:53,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 02:16:53,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:16:53,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:53,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:53,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835464903] [2023-12-21 02:16:53,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:53,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619824196] [2023-12-21 02:16:53,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619824196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:53,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:53,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:16:53,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549331] [2023-12-21 02:16:53,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:53,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:16:53,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:53,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:16:53,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:16:53,458 INFO L87 Difference]: Start difference. First operand 151 states and 223 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:53,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:53,490 INFO L93 Difference]: Finished difference Result 305 states and 450 transitions. [2023-12-21 02:16:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:16:53,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 148 [2023-12-21 02:16:53,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:53,492 INFO L225 Difference]: With dead ends: 305 [2023-12-21 02:16:53,492 INFO L226 Difference]: Without dead ends: 155 [2023-12-21 02:16:53,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:16:53,493 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 3 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:53,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 628 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:16:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-21 02:16:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2023-12-21 02:16:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 134 states have internal predecessors, (191), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:16:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 225 transitions. [2023-12-21 02:16:53,515 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 225 transitions. Word has length 148 [2023-12-21 02:16:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:53,515 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 225 transitions. [2023-12-21 02:16:53,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 225 transitions. [2023-12-21 02:16:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 02:16:53,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:53,517 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:53,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 02:16:53,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:53,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:53,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:53,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1045320329, now seen corresponding path program 1 times [2023-12-21 02:16:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:53,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847631631] [2023-12-21 02:16:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:53,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:53,781 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:53,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97767186] [2023-12-21 02:16:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:53,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:53,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:53,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:53,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 02:16:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:54,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 02:16:54,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:16:54,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:54,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847631631] [2023-12-21 02:16:54,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:54,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97767186] [2023-12-21 02:16:54,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97767186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:54,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:54,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:16:54,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315087053] [2023-12-21 02:16:54,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:54,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:16:54,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:54,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:16:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:16:54,103 INFO L87 Difference]: Start difference. First operand 153 states and 225 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:54,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:54,143 INFO L93 Difference]: Finished difference Result 346 states and 508 transitions. [2023-12-21 02:16:54,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:16:54,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 148 [2023-12-21 02:16:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:54,144 INFO L225 Difference]: With dead ends: 346 [2023-12-21 02:16:54,144 INFO L226 Difference]: Without dead ends: 194 [2023-12-21 02:16:54,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:16:54,145 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 66 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:54,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 701 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:16:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-21 02:16:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 155. [2023-12-21 02:16:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 136 states have (on average 1.4191176470588236) internal successors, (193), 136 states have internal predecessors, (193), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:16:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 227 transitions. [2023-12-21 02:16:54,150 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 227 transitions. Word has length 148 [2023-12-21 02:16:54,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:54,150 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 227 transitions. [2023-12-21 02:16:54,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:54,151 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 227 transitions. [2023-12-21 02:16:54,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:16:54,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:54,152 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:54,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 02:16:54,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:54,359 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:54,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:54,360 INFO L85 PathProgramCache]: Analyzing trace with hash -675206354, now seen corresponding path program 1 times [2023-12-21 02:16:54,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:54,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385389517] [2023-12-21 02:16:54,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:54,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:54,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:54,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494018248] [2023-12-21 02:16:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:54,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:54,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:54,411 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:54,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 02:16:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:54,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 02:16:54,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:16:54,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:54,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:54,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385389517] [2023-12-21 02:16:54,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:54,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494018248] [2023-12-21 02:16:54,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494018248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:54,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:54,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:16:54,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378093749] [2023-12-21 02:16:54,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:54,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:16:54,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:54,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:16:54,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:16:54,703 INFO L87 Difference]: Start difference. First operand 155 states and 227 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:54,723 INFO L93 Difference]: Finished difference Result 313 states and 460 transitions. [2023-12-21 02:16:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 02:16:54,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-21 02:16:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:54,725 INFO L225 Difference]: With dead ends: 313 [2023-12-21 02:16:54,725 INFO L226 Difference]: Without dead ends: 159 [2023-12-21 02:16:54,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:16:54,726 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:54,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 420 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:16:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-21 02:16:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2023-12-21 02:16:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.4172661870503598) internal successors, (197), 139 states have internal predecessors, (197), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:16:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 231 transitions. [2023-12-21 02:16:54,731 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 231 transitions. Word has length 150 [2023-12-21 02:16:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:54,731 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 231 transitions. [2023-12-21 02:16:54,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 231 transitions. [2023-12-21 02:16:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:16:54,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:54,733 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:54,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 02:16:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:54,940 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:54,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash -456351636, now seen corresponding path program 1 times [2023-12-21 02:16:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:54,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359096858] [2023-12-21 02:16:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:54,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:55,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:55,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566579420] [2023-12-21 02:16:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:55,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:55,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:55,020 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:55,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 02:16:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:55,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 02:16:55,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:55,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:16:55,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-21 02:16:55,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-21 02:16:55,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-21 02:16:55,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:16:55,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:16:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 7 proven. 309 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-21 02:16:55,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:16:56,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-12-21 02:16:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 27 proven. 21 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-21 02:16:56,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:56,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359096858] [2023-12-21 02:16:56,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:56,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566579420] [2023-12-21 02:16:56,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566579420] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 02:16:56,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 02:16:56,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-12-21 02:16:56,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889891995] [2023-12-21 02:16:56,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 02:16:56,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 02:16:56,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:56,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 02:16:56,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:16:56,149 INFO L87 Difference]: Start difference. First operand 158 states and 231 transitions. Second operand has 18 states, 16 states have (on average 7.625) internal successors, (122), 17 states have internal predecessors, (122), 6 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-21 02:16:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:57,236 INFO L93 Difference]: Finished difference Result 567 states and 815 transitions. [2023-12-21 02:16:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-21 02:16:57,236 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 7.625) internal successors, (122), 17 states have internal predecessors, (122), 6 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 6 states have call successors, (34) Word has length 150 [2023-12-21 02:16:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:57,239 INFO L225 Difference]: With dead ends: 567 [2023-12-21 02:16:57,239 INFO L226 Difference]: Without dead ends: 410 [2023-12-21 02:16:57,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=639, Invalid=2117, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 02:16:57,242 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1301 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:57,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 1506 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:16:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-21 02:16:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 261. [2023-12-21 02:16:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 221 states have (on average 1.3891402714932126) internal successors, (307), 222 states have internal predecessors, (307), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:16:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 375 transitions. [2023-12-21 02:16:57,259 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 375 transitions. Word has length 150 [2023-12-21 02:16:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:57,260 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 375 transitions. [2023-12-21 02:16:57,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 7.625) internal successors, (122), 17 states have internal predecessors, (122), 6 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 6 states have call successors, (34) [2023-12-21 02:16:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 375 transitions. [2023-12-21 02:16:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:16:57,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:57,262 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:57,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 02:16:57,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 02:16:57,472 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:57,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:57,473 INFO L85 PathProgramCache]: Analyzing trace with hash -809219860, now seen corresponding path program 1 times [2023-12-21 02:16:57,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:57,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110162915] [2023-12-21 02:16:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:57,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:57,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:57,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891539965] [2023-12-21 02:16:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:57,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:57,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:57,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:57,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 02:16:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:57,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 02:16:57,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:57,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:16:57,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:16:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:16:57,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:57,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:57,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110162915] [2023-12-21 02:16:57,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:57,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891539965] [2023-12-21 02:16:57,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891539965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:57,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:57,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:16:57,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793773493] [2023-12-21 02:16:57,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:57,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:16:57,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:16:57,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:16:57,852 INFO L87 Difference]: Start difference. First operand 261 states and 375 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:57,973 INFO L93 Difference]: Finished difference Result 585 states and 838 transitions. [2023-12-21 02:16:57,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:16:57,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-21 02:16:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:57,978 INFO L225 Difference]: With dead ends: 585 [2023-12-21 02:16:57,978 INFO L226 Difference]: Without dead ends: 399 [2023-12-21 02:16:57,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:16:57,980 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 235 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:57,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1357 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:16:57,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-21 02:16:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 264. [2023-12-21 02:16:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 224 states have (on average 1.3883928571428572) internal successors, (311), 225 states have internal predecessors, (311), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:16:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 379 transitions. [2023-12-21 02:16:58,015 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 379 transitions. Word has length 150 [2023-12-21 02:16:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:58,017 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 379 transitions. [2023-12-21 02:16:58,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 379 transitions. [2023-12-21 02:16:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:16:58,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:58,018 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:58,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 02:16:58,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:58,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:58,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:58,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1796803694, now seen corresponding path program 1 times [2023-12-21 02:16:58,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:58,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260452097] [2023-12-21 02:16:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:58,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:58,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:58,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059877296] [2023-12-21 02:16:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:58,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:58,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:58,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:58,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 02:16:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:58,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 02:16:58,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:58,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:16:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:16:58,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:58,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260452097] [2023-12-21 02:16:58,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059877296] [2023-12-21 02:16:58,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059877296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:58,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:16:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820402594] [2023-12-21 02:16:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:58,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:16:58,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:58,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:16:58,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:16:58,588 INFO L87 Difference]: Start difference. First operand 264 states and 379 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:58,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:58,695 INFO L93 Difference]: Finished difference Result 630 states and 901 transitions. [2023-12-21 02:16:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:16:58,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-21 02:16:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:58,698 INFO L225 Difference]: With dead ends: 630 [2023-12-21 02:16:58,698 INFO L226 Difference]: Without dead ends: 441 [2023-12-21 02:16:58,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:16:58,699 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 294 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:58,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1474 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:16:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-21 02:16:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 267. [2023-12-21 02:16:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 227 states have (on average 1.3876651982378854) internal successors, (315), 228 states have internal predecessors, (315), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:16:58,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 383 transitions. [2023-12-21 02:16:58,711 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 383 transitions. Word has length 150 [2023-12-21 02:16:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:58,711 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 383 transitions. [2023-12-21 02:16:58,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 383 transitions. [2023-12-21 02:16:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:16:58,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:58,713 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:58,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 02:16:58,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-21 02:16:58,921 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:16:58,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:16:58,921 INFO L85 PathProgramCache]: Analyzing trace with hash 208455792, now seen corresponding path program 1 times [2023-12-21 02:16:58,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:16:58,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877209769] [2023-12-21 02:16:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:58,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:16:58,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:16:58,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140771764] [2023-12-21 02:16:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:16:58,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:16:58,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:16:58,949 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:16:58,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 02:16:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:16:59,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 02:16:59,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:16:59,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:16:59,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-21 02:16:59,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:16:59,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:16:59,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-21 02:16:59,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-21 02:16:59,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:16:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:16:59,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:16:59,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:16:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877209769] [2023-12-21 02:16:59,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:16:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140771764] [2023-12-21 02:16:59,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140771764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:16:59,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:16:59,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:16:59,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946271344] [2023-12-21 02:16:59,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:16:59,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:16:59,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:16:59,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:16:59,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:16:59,393 INFO L87 Difference]: Start difference. First operand 267 states and 383 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:16:59,879 INFO L93 Difference]: Finished difference Result 649 states and 924 transitions. [2023-12-21 02:16:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 02:16:59,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-21 02:16:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:16:59,881 INFO L225 Difference]: With dead ends: 649 [2023-12-21 02:16:59,881 INFO L226 Difference]: Without dead ends: 457 [2023-12-21 02:16:59,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:16:59,882 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 601 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:16:59,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 2103 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:16:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-21 02:16:59,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 274. [2023-12-21 02:16:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 234 states have (on average 1.3846153846153846) internal successors, (324), 235 states have internal predecessors, (324), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:16:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 392 transitions. [2023-12-21 02:16:59,893 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 392 transitions. Word has length 150 [2023-12-21 02:16:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:16:59,893 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 392 transitions. [2023-12-21 02:16:59,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:16:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 392 transitions. [2023-12-21 02:16:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:16:59,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:16:59,895 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:16:59,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:00,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 02:17:00,102 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:00,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -590365142, now seen corresponding path program 1 times [2023-12-21 02:17:00,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:00,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279622525] [2023-12-21 02:17:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:00,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:00,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351222830] [2023-12-21 02:17:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:00,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:00,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:00,131 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:00,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 02:17:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:00,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 02:17:00,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:00,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:17:00,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:17:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:00,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:00,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:00,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279622525] [2023-12-21 02:17:00,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:00,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351222830] [2023-12-21 02:17:00,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351222830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:00,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:00,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:17:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239535933] [2023-12-21 02:17:00,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:00,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:17:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:00,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:17:00,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:17:00,453 INFO L87 Difference]: Start difference. First operand 274 states and 392 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:00,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:00,570 INFO L93 Difference]: Finished difference Result 612 states and 873 transitions. [2023-12-21 02:17:00,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:17:00,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-21 02:17:00,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:00,572 INFO L225 Difference]: With dead ends: 612 [2023-12-21 02:17:00,572 INFO L226 Difference]: Without dead ends: 413 [2023-12-21 02:17:00,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:17:00,573 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 247 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:00,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 754 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:17:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-21 02:17:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 279. [2023-12-21 02:17:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 239 states have (on average 1.3849372384937237) internal successors, (331), 240 states have internal predecessors, (331), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 399 transitions. [2023-12-21 02:17:00,584 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 399 transitions. Word has length 150 [2023-12-21 02:17:00,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:00,584 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 399 transitions. [2023-12-21 02:17:00,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 399 transitions. [2023-12-21 02:17:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:17:00,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:00,585 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:00,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:00,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 02:17:00,793 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:00,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2015658412, now seen corresponding path program 1 times [2023-12-21 02:17:00,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:00,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131998606] [2023-12-21 02:17:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:00,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:00,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717262291] [2023-12-21 02:17:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:00,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:00,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:00,821 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:00,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 02:17:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:01,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 02:17:01,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:01,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:01,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:01,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-21 02:17:01,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:01,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2023-12-21 02:17:01,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-12-21 02:17:01,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-12-21 02:17:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 14 proven. 162 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-12-21 02:17:02,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:17:03,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:03,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131998606] [2023-12-21 02:17:03,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:03,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717262291] [2023-12-21 02:17:03,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717262291] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:17:03,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:17:03,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-12-21 02:17:03,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983590513] [2023-12-21 02:17:03,018 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 02:17:03,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 02:17:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:03,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 02:17:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-12-21 02:17:03,019 INFO L87 Difference]: Start difference. First operand 279 states and 399 transitions. Second operand has 17 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-21 02:17:05,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:05,046 INFO L93 Difference]: Finished difference Result 651 states and 918 transitions. [2023-12-21 02:17:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 02:17:05,047 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 150 [2023-12-21 02:17:05,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:05,049 INFO L225 Difference]: With dead ends: 651 [2023-12-21 02:17:05,049 INFO L226 Difference]: Without dead ends: 447 [2023-12-21 02:17:05,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 02:17:05,050 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 984 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:05,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1846 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 02:17:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-21 02:17:05,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 287. [2023-12-21 02:17:05,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 245 states have (on average 1.3755102040816327) internal successors, (337), 246 states have internal predecessors, (337), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 405 transitions. [2023-12-21 02:17:05,063 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 405 transitions. Word has length 150 [2023-12-21 02:17:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:05,063 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 405 transitions. [2023-12-21 02:17:05,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.625) internal successors, (74), 15 states have internal predecessors, (74), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-21 02:17:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 405 transitions. [2023-12-21 02:17:05,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:17:05,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:05,065 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:05,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:05,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 02:17:05,272 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:05,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash 427310510, now seen corresponding path program 1 times [2023-12-21 02:17:05,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:05,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166547412] [2023-12-21 02:17:05,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:05,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:05,305 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:05,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372268111] [2023-12-21 02:17:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:05,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:05,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:05,318 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:05,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 02:17:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:05,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 02:17:05,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:05,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:05,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-21 02:17:05,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:05,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:17:05,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2023-12-21 02:17:05,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 63 [2023-12-21 02:17:05,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 36 [2023-12-21 02:17:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:05,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:05,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:05,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166547412] [2023-12-21 02:17:05,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:05,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372268111] [2023-12-21 02:17:05,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372268111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:05,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:05,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:17:05,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083224286] [2023-12-21 02:17:05,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:05,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:17:05,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:17:05,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:17:05,950 INFO L87 Difference]: Start difference. First operand 287 states and 405 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:10,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-21 02:17:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:10,755 INFO L93 Difference]: Finished difference Result 729 states and 1023 transitions. [2023-12-21 02:17:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:17:10,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 150 [2023-12-21 02:17:10,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:10,758 INFO L225 Difference]: With dead ends: 729 [2023-12-21 02:17:10,758 INFO L226 Difference]: Without dead ends: 521 [2023-12-21 02:17:10,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:17:10,759 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 615 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:10,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 2188 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 504 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2023-12-21 02:17:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-12-21 02:17:10,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 292. [2023-12-21 02:17:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 250 states have (on average 1.376) internal successors, (344), 251 states have internal predecessors, (344), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 412 transitions. [2023-12-21 02:17:10,771 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 412 transitions. Word has length 150 [2023-12-21 02:17:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:10,771 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 412 transitions. [2023-12-21 02:17:10,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 412 transitions. [2023-12-21 02:17:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 02:17:10,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:10,772 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:10,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:10,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:10,980 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:10,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash 232825485, now seen corresponding path program 1 times [2023-12-21 02:17:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:10,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842472617] [2023-12-21 02:17:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:11,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:11,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628124823] [2023-12-21 02:17:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:11,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:11,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:11,008 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:11,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 02:17:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:11,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 02:17:11,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:11,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:11,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:11,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842472617] [2023-12-21 02:17:11,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:11,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628124823] [2023-12-21 02:17:11,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628124823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:11,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:11,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 02:17:11,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024266781] [2023-12-21 02:17:11,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:11,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 02:17:11,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 02:17:11,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:17:11,333 INFO L87 Difference]: Start difference. First operand 292 states and 412 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:11,355 INFO L93 Difference]: Finished difference Result 541 states and 764 transitions. [2023-12-21 02:17:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 02:17:11,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-21 02:17:11,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:11,356 INFO L225 Difference]: With dead ends: 541 [2023-12-21 02:17:11,356 INFO L226 Difference]: Without dead ends: 328 [2023-12-21 02:17:11,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 02:17:11,359 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 46 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:11,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 458 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:17:11,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-21 02:17:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 293. [2023-12-21 02:17:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 251 states have (on average 1.3745019920318724) internal successors, (345), 252 states have internal predecessors, (345), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 413 transitions. [2023-12-21 02:17:11,370 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 413 transitions. Word has length 151 [2023-12-21 02:17:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:11,370 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 413 transitions. [2023-12-21 02:17:11,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 413 transitions. [2023-12-21 02:17:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 02:17:11,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:11,373 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:11,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:11,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 02:17:11,580 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:11,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash -778291765, now seen corresponding path program 1 times [2023-12-21 02:17:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316472486] [2023-12-21 02:17:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:11,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:11,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:11,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257015868] [2023-12-21 02:17:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:11,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:11,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:11,611 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:11,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 02:17:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:11,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 02:17:11,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:11,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-21 02:17:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:11,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:11,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316472486] [2023-12-21 02:17:11,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:11,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257015868] [2023-12-21 02:17:11,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257015868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:11,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:11,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:17:11,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662314019] [2023-12-21 02:17:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:11,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:17:11,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:11,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:17:11,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:17:11,976 INFO L87 Difference]: Start difference. First operand 293 states and 413 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:12,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:12,076 INFO L93 Difference]: Finished difference Result 625 states and 876 transitions. [2023-12-21 02:17:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:17:12,076 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2023-12-21 02:17:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:12,078 INFO L225 Difference]: With dead ends: 625 [2023-12-21 02:17:12,078 INFO L226 Difference]: Without dead ends: 411 [2023-12-21 02:17:12,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:17:12,079 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 308 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:12,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1201 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:17:12,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-21 02:17:12,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 312. [2023-12-21 02:17:12,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 270 states have (on average 1.374074074074074) internal successors, (371), 271 states have internal predecessors, (371), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 439 transitions. [2023-12-21 02:17:12,091 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 439 transitions. Word has length 151 [2023-12-21 02:17:12,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:12,091 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 439 transitions. [2023-12-21 02:17:12,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:12,091 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 439 transitions. [2023-12-21 02:17:12,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:17:12,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:12,092 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:12,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:12,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 02:17:12,300 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:12,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2122711089, now seen corresponding path program 1 times [2023-12-21 02:17:12,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:12,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759604910] [2023-12-21 02:17:12,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:12,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:12,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:12,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638749469] [2023-12-21 02:17:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:12,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:12,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:12,328 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:12,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 02:17:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:12,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 02:17:12,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:12,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:12,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:17:12,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-21 02:17:12,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:17:12,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:17:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:12,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:12,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759604910] [2023-12-21 02:17:12,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638749469] [2023-12-21 02:17:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638749469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:12,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:12,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:17:12,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601345160] [2023-12-21 02:17:12,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:12,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:17:12,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:12,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:17:12,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:17:12,778 INFO L87 Difference]: Start difference. First operand 312 states and 439 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:13,368 INFO L93 Difference]: Finished difference Result 780 states and 1096 transitions. [2023-12-21 02:17:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:17:13,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-21 02:17:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:13,371 INFO L225 Difference]: With dead ends: 780 [2023-12-21 02:17:13,371 INFO L226 Difference]: Without dead ends: 547 [2023-12-21 02:17:13,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:17:13,372 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 512 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:13,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2121 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:17:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-21 02:17:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 341. [2023-12-21 02:17:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 299 states have (on average 1.3846153846153846) internal successors, (414), 300 states have internal predecessors, (414), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 482 transitions. [2023-12-21 02:17:13,386 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 482 transitions. Word has length 152 [2023-12-21 02:17:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:13,386 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 482 transitions. [2023-12-21 02:17:13,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 482 transitions. [2023-12-21 02:17:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:17:13,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:13,387 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:13,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:13,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 02:17:13,595 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:13,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:13,595 INFO L85 PathProgramCache]: Analyzing trace with hash 534363187, now seen corresponding path program 1 times [2023-12-21 02:17:13,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:13,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554653559] [2023-12-21 02:17:13,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:13,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:13,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:13,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105170580] [2023-12-21 02:17:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:13,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:13,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:13,622 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:13,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 02:17:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:13,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 02:17:13,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:13,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:13,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:17:14,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 52 [2023-12-21 02:17:14,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2023-12-21 02:17:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:14,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:14,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:14,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554653559] [2023-12-21 02:17:14,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:14,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105170580] [2023-12-21 02:17:14,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105170580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:14,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:14,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:17:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162244908] [2023-12-21 02:17:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:14,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:17:14,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:14,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:17:14,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:17:14,122 INFO L87 Difference]: Start difference. First operand 341 states and 482 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:15,073 INFO L93 Difference]: Finished difference Result 854 states and 1201 transitions. [2023-12-21 02:17:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:17:15,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-21 02:17:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:15,075 INFO L225 Difference]: With dead ends: 854 [2023-12-21 02:17:15,075 INFO L226 Difference]: Without dead ends: 592 [2023-12-21 02:17:15,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:17:15,076 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 572 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:15,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 2467 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 02:17:15,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-12-21 02:17:15,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 343. [2023-12-21 02:17:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 301 states have (on average 1.3820598006644518) internal successors, (416), 302 states have internal predecessors, (416), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:15,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 484 transitions. [2023-12-21 02:17:15,090 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 484 transitions. Word has length 152 [2023-12-21 02:17:15,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:15,090 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 484 transitions. [2023-12-21 02:17:15,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:15,090 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 484 transitions. [2023-12-21 02:17:15,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:17:15,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:15,091 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:15,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:15,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 02:17:15,299 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:15,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1154580555, now seen corresponding path program 1 times [2023-12-21 02:17:15,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:15,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600652168] [2023-12-21 02:17:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:15,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:15,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:15,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535181021] [2023-12-21 02:17:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:15,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:15,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:15,326 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:15,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 02:17:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:15,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 02:17:15,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:15,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-21 02:17:15,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:17:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:15,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:15,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:15,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600652168] [2023-12-21 02:17:15,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535181021] [2023-12-21 02:17:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535181021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:15,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:15,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:17:15,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795103457] [2023-12-21 02:17:15,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:17:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:17:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:17:15,745 INFO L87 Difference]: Start difference. First operand 343 states and 484 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:15,880 INFO L93 Difference]: Finished difference Result 746 states and 1050 transitions. [2023-12-21 02:17:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:17:15,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-21 02:17:15,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:15,882 INFO L225 Difference]: With dead ends: 746 [2023-12-21 02:17:15,882 INFO L226 Difference]: Without dead ends: 482 [2023-12-21 02:17:15,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:17:15,883 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 244 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:15,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1205 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:17:15,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-21 02:17:15,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 341. [2023-12-21 02:17:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 299 states have (on average 1.3779264214046822) internal successors, (412), 300 states have internal predecessors, (412), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 480 transitions. [2023-12-21 02:17:15,895 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 480 transitions. Word has length 152 [2023-12-21 02:17:15,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:15,896 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 480 transitions. [2023-12-21 02:17:15,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 480 transitions. [2023-12-21 02:17:15,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:17:15,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:15,897 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:15,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:16,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:16,104 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:16,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:16,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1507448779, now seen corresponding path program 1 times [2023-12-21 02:17:16,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:16,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008991241] [2023-12-21 02:17:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:16,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543320259] [2023-12-21 02:17:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:16,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:16,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:16,132 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:16,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 02:17:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:16,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 02:17:16,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:16,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:16,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:17:16,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:17:16,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:17:16,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 78 [2023-12-21 02:17:16,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 43 [2023-12-21 02:17:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:16,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:16,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:16,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008991241] [2023-12-21 02:17:16,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:16,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543320259] [2023-12-21 02:17:16,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543320259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:16,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:16,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:17:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006565664] [2023-12-21 02:17:16,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:16,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:17:16,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:16,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:17:16,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:17:16,925 INFO L87 Difference]: Start difference. First operand 341 states and 480 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:17,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:17,910 INFO L93 Difference]: Finished difference Result 888 states and 1241 transitions. [2023-12-21 02:17:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 02:17:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-21 02:17:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:17,913 INFO L225 Difference]: With dead ends: 888 [2023-12-21 02:17:17,913 INFO L226 Difference]: Without dead ends: 626 [2023-12-21 02:17:17,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-12-21 02:17:17,914 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 623 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:17,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 3269 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 02:17:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-21 02:17:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 348. [2023-12-21 02:17:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 306 states have (on average 1.3790849673202614) internal successors, (422), 307 states have internal predecessors, (422), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 490 transitions. [2023-12-21 02:17:17,934 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 490 transitions. Word has length 152 [2023-12-21 02:17:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:17,934 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 490 transitions. [2023-12-21 02:17:17,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 490 transitions. [2023-12-21 02:17:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:17:17,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:17,935 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:17,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:18,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:18,143 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:18,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:18,143 INFO L85 PathProgramCache]: Analyzing trace with hash 299753841, now seen corresponding path program 1 times [2023-12-21 02:17:18,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:18,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225973883] [2023-12-21 02:17:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:18,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:18,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347862957] [2023-12-21 02:17:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:18,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:18,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:18,171 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:18,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 02:17:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:18,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 02:17:18,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:18,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:18,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:17:18,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-21 02:17:18,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-12-21 02:17:18,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:17:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:18,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:18,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:18,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225973883] [2023-12-21 02:17:18,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:18,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347862957] [2023-12-21 02:17:18,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347862957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:18,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:18,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:17:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116985992] [2023-12-21 02:17:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:18,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:17:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:17:18,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:17:18,778 INFO L87 Difference]: Start difference. First operand 348 states and 490 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:20,199 INFO L93 Difference]: Finished difference Result 863 states and 1209 transitions. [2023-12-21 02:17:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 02:17:20,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-21 02:17:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:20,202 INFO L225 Difference]: With dead ends: 863 [2023-12-21 02:17:20,202 INFO L226 Difference]: Without dead ends: 594 [2023-12-21 02:17:20,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-12-21 02:17:20,203 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 640 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:20,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 2590 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 02:17:20,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-12-21 02:17:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 348. [2023-12-21 02:17:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 306 states have (on average 1.3790849673202614) internal successors, (422), 307 states have internal predecessors, (422), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 490 transitions. [2023-12-21 02:17:20,216 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 490 transitions. Word has length 152 [2023-12-21 02:17:20,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:20,217 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 490 transitions. [2023-12-21 02:17:20,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:20,217 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 490 transitions. [2023-12-21 02:17:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:17:20,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:20,218 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:20,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-21 02:17:20,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:20,425 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:20,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1288594061, now seen corresponding path program 1 times [2023-12-21 02:17:20,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:20,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300262183] [2023-12-21 02:17:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:20,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:20,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678657533] [2023-12-21 02:17:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:20,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:20,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:20,458 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:20,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 02:17:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:20,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 02:17:20,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:20,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:20,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:17:20,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-21 02:17:20,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 52 [2023-12-21 02:17:20,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2023-12-21 02:17:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:17:21,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:17:21,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:21,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300262183] [2023-12-21 02:17:21,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:21,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678657533] [2023-12-21 02:17:21,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678657533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:17:21,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:17:21,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:17:21,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112455206] [2023-12-21 02:17:21,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:17:21,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:17:21,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:17:21,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:17:21,053 INFO L87 Difference]: Start difference. First operand 348 states and 490 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:25,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-21 02:17:27,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-21 02:17:31,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-21 02:17:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:32,515 INFO L93 Difference]: Finished difference Result 859 states and 1202 transitions. [2023-12-21 02:17:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:17:32,515 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-21 02:17:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:32,517 INFO L225 Difference]: With dead ends: 859 [2023-12-21 02:17:32,517 INFO L226 Difference]: Without dead ends: 590 [2023-12-21 02:17:32,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:17:32,518 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 507 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:32,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 2796 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 668 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2023-12-21 02:17:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-21 02:17:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 348. [2023-12-21 02:17:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 306 states have (on average 1.3790849673202614) internal successors, (422), 307 states have internal predecessors, (422), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 02:17:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 490 transitions. [2023-12-21 02:17:32,539 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 490 transitions. Word has length 152 [2023-12-21 02:17:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:32,539 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 490 transitions. [2023-12-21 02:17:32,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:17:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 490 transitions. [2023-12-21 02:17:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:17:32,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:32,541 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:32,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 02:17:32,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:32,748 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:32,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -786052813, now seen corresponding path program 1 times [2023-12-21 02:17:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:32,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089429841] [2023-12-21 02:17:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:32,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:32,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:32,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868354587] [2023-12-21 02:17:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:32,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:32,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:32,785 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:32,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 02:17:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:33,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-21 02:17:33,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:33,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:33,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:34,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:17:34,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:17:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 13 proven. 383 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-21 02:17:34,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:17:49,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:17:49,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089429841] [2023-12-21 02:17:49,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:17:49,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868354587] [2023-12-21 02:17:49,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868354587] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:17:49,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:17:49,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-21 02:17:49,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473387390] [2023-12-21 02:17:49,310 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 02:17:49,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 02:17:49,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:17:49,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 02:17:49,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=320, Unknown=3, NotChecked=0, Total=380 [2023-12-21 02:17:49,311 INFO L87 Difference]: Start difference. First operand 348 states and 490 transitions. Second operand has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 3 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-21 02:17:56,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:17:56,784 INFO L93 Difference]: Finished difference Result 621 states and 872 transitions. [2023-12-21 02:17:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 02:17:56,784 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 3 states have call predecessors, (17), 5 states have call successors, (17) Word has length 152 [2023-12-21 02:17:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:17:56,785 INFO L225 Difference]: With dead ends: 621 [2023-12-21 02:17:56,785 INFO L226 Difference]: Without dead ends: 352 [2023-12-21 02:17:56,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=231, Invalid=1026, Unknown=3, NotChecked=0, Total=1260 [2023-12-21 02:17:56,787 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 774 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:17:56,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1461 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-21 02:17:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-21 02:17:56,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 262. [2023-12-21 02:17:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 240 states have (on average 1.3958333333333333) internal successors, (335), 240 states have internal predecessors, (335), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:17:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 369 transitions. [2023-12-21 02:17:56,798 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 369 transitions. Word has length 152 [2023-12-21 02:17:56,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:17:56,798 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 369 transitions. [2023-12-21 02:17:56,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 3 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-21 02:17:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 369 transitions. [2023-12-21 02:17:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:17:56,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:17:56,799 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:17:56,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-21 02:17:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:57,007 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:17:57,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:17:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash -121245385, now seen corresponding path program 1 times [2023-12-21 02:17:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:17:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254754951] [2023-12-21 02:17:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:17:57,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:17:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807054011] [2023-12-21 02:17:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:17:57,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:17:57,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:17:57,040 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:17:57,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 02:17:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:17:57,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 02:17:57,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:17:59,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:18:01,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:18:01,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:18:02,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-21 02:18:02,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-21 02:18:02,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:18:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 7 proven. 309 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-21 02:18:02,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:18:04,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2023-12-21 02:18:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-21 02:18:04,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:18:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254754951] [2023-12-21 02:18:04,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:18:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807054011] [2023-12-21 02:18:04,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807054011] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:18:04,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:18:04,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-21 02:18:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915267755] [2023-12-21 02:18:04,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:18:04,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:18:04,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:18:04,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:18:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:18:04,552 INFO L87 Difference]: Start difference. First operand 262 states and 369 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:18:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:18:05,429 INFO L93 Difference]: Finished difference Result 672 states and 943 transitions. [2023-12-21 02:18:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:18:05,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2023-12-21 02:18:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:18:05,431 INFO L225 Difference]: With dead ends: 672 [2023-12-21 02:18:05,431 INFO L226 Difference]: Without dead ends: 411 [2023-12-21 02:18:05,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:18:05,432 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 242 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:18:05,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 632 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:18:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-21 02:18:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 279. [2023-12-21 02:18:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 257 states have (on average 1.377431906614786) internal successors, (354), 257 states have internal predecessors, (354), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:18:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 388 transitions. [2023-12-21 02:18:05,451 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 388 transitions. Word has length 152 [2023-12-21 02:18:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:18:05,452 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 388 transitions. [2023-12-21 02:18:05,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-21 02:18:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 388 transitions. [2023-12-21 02:18:05,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:18:05,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:18:05,454 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:18:05,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 02:18:05,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:18:05,662 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:18:05,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:18:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1685957235, now seen corresponding path program 1 times [2023-12-21 02:18:05,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:18:05,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741314745] [2023-12-21 02:18:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:18:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:18:05,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:18:05,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712751191] [2023-12-21 02:18:05,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:18:05,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:18:05,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:18:05,691 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:18:05,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 02:18:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:18:06,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-21 02:18:06,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:18:06,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:18:10,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:18:14,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:18:14,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:18:15,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-21 02:18:16,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-21 02:18:16,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-12-21 02:18:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 13 proven. 383 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-21 02:18:16,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:18:18,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:18:37,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:18:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741314745] [2023-12-21 02:18:37,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:18:37,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712751191] [2023-12-21 02:18:37,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712751191] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:18:37,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:18:37,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-12-21 02:18:37,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335618144] [2023-12-21 02:18:37,796 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 02:18:37,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 02:18:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:18:37,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 02:18:37,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=611, Unknown=4, NotChecked=0, Total=702 [2023-12-21 02:18:37,797 INFO L87 Difference]: Start difference. First operand 279 states and 388 transitions. Second operand has 20 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 3 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-21 02:18:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:18:51,361 INFO L93 Difference]: Finished difference Result 677 states and 938 transitions. [2023-12-21 02:18:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 02:18:51,362 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 3 states have call predecessors, (17), 5 states have call successors, (17) Word has length 152 [2023-12-21 02:18:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:18:51,363 INFO L225 Difference]: With dead ends: 677 [2023-12-21 02:18:51,363 INFO L226 Difference]: Without dead ends: 399 [2023-12-21 02:18:51,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=323, Invalid=1743, Unknown=4, NotChecked=0, Total=2070 [2023-12-21 02:18:51,364 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 939 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-21 02:18:51,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 2566 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-12-21 02:18:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-21 02:18:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 283. [2023-12-21 02:18:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 261 states have (on average 1.3754789272030652) internal successors, (359), 261 states have internal predecessors, (359), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-21 02:18:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 393 transitions. [2023-12-21 02:18:51,375 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 393 transitions. Word has length 152 [2023-12-21 02:18:51,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:18:51,375 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 393 transitions. [2023-12-21 02:18:51,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 3 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-21 02:18:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 393 transitions. [2023-12-21 02:18:51,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:18:51,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:18:51,376 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:18:51,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-21 02:18:51,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-21 02:18:51,585 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:18:51,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:18:51,586 INFO L85 PathProgramCache]: Analyzing trace with hash 97609333, now seen corresponding path program 1 times [2023-12-21 02:18:51,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:18:51,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114227893] [2023-12-21 02:18:51,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:18:51,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:18:51,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 02:18:51,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685579541] [2023-12-21 02:18:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:18:51,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:18:51,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:18:51,611 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:18:51,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 02:18:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:18:51,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-21 02:18:51,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:18:54,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:18:56,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-21 02:18:56,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 02:18:57,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2023-12-21 02:18:57,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 02:18:57,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 89 [2023-12-21 02:18:57,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 50 [2023-12-21 02:18:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 7 proven. 309 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-21 02:18:58,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:19:03,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 261 treesize of output 181 [2023-12-21 02:19:14,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:19:14,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 139 [2023-12-21 02:19:14,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114227893] [2023-12-21 02:19:14,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 02:19:14,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685579541] [2023-12-21 02:19:14,919 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-21 02:19:14,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-21 02:19:15,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 02:19:15,120 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2023-12-21 02:19:15,124 INFO L158 Benchmark]: Toolchain (without parser) took 146362.70ms. Allocated memory was 304.1MB in the beginning and 626.0MB in the end (delta: 321.9MB). Free memory was 253.3MB in the beginning and 290.5MB in the end (delta: -37.2MB). Peak memory consumption was 285.6MB. Max. memory is 8.0GB. [2023-12-21 02:19:15,124 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 216.0MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 02:19:15,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.76ms. Allocated memory is still 304.1MB. Free memory was 253.0MB in the beginning and 237.2MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 02:19:15,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.92ms. Allocated memory is still 304.1MB. Free memory was 237.2MB in the beginning and 232.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 02:19:15,124 INFO L158 Benchmark]: Boogie Preprocessor took 103.94ms. Allocated memory is still 304.1MB. Free memory was 232.3MB in the beginning and 225.4MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-21 02:19:15,124 INFO L158 Benchmark]: RCFGBuilder took 741.89ms. Allocated memory is still 304.1MB. Free memory was 225.3MB in the beginning and 222.7MB in the end (delta: 2.6MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. [2023-12-21 02:19:15,124 INFO L158 Benchmark]: TraceAbstraction took 145186.34ms. Allocated memory was 304.1MB in the beginning and 626.0MB in the end (delta: 321.9MB). Free memory was 222.2MB in the beginning and 290.5MB in the end (delta: -68.3MB). Peak memory consumption was 253.6MB. Max. memory is 8.0GB. [2023-12-21 02:19:15,125 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 216.0MB. Free memory is still 166.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 276.76ms. Allocated memory is still 304.1MB. Free memory was 253.0MB in the beginning and 237.2MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.92ms. Allocated memory is still 304.1MB. Free memory was 237.2MB in the beginning and 232.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 103.94ms. Allocated memory is still 304.1MB. Free memory was 232.3MB in the beginning and 225.4MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 741.89ms. Allocated memory is still 304.1MB. Free memory was 225.3MB in the beginning and 222.7MB in the end (delta: 2.6MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. * TraceAbstraction took 145186.34ms. Allocated memory was 304.1MB in the beginning and 626.0MB in the end (delta: 321.9MB). Free memory was 222.2MB in the beginning and 290.5MB in the end (delta: -68.3MB). Peak memory consumption was 253.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...